[wp-trac] [WordPress Trac] #25416: "Preview Changes" throws a PHP Notice and Warning every second use

[WordPress Trac]

#25416: "Preview Changes" throws a PHP Notice and Warning every second use
--------------------------+-----------------------------
 Reporter:  crysman       |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:  3.6.1
 Severity:  normal        |   Keywords:
--------------------------+-----------------------------
 This is so weird... Every second time I press "Preview Changes" in the
 page edit admin interface '''I get these errors instead of the page
 preview''':
 {{{
 Notice: Undefined index: post_excerpt in /var/www/cmstest3/wp-
 admin/includes/post.php on line 1333

 Warning: Cannot modify header information - headers already sent by
 (output started at /var/www/cmstest3/wp-admin/includes/post.php:1333) in
 /var/www/cmstest3/wp-includes/pluggable.php on line 875
 }}}

 Using latest WP (3.6.1), standard template (20-13), no plugins activated.
 We are running Apache 2 webserver with this PHP on GNU/Linux:

 {{{
 $ php -v
 PHP Warning:  PHP Startup: Unable to load dynamic library
 '/usr/lib/php5/20060613/snmp.so' - /usr/lib/php5/20060613/snmp.so: cannot
 open shared object file: No such file or directory in Unknown on line 0
 PHP 5.2.4-2ubuntu5.27 with Suhosin-Patch 0.9.6.2 (cli) (built: Mar 11 2013
 14:13:32)
 Copyright (c) 1997-2007 The PHP Group
 Zend Engine v2.2.0, Copyright (c) 1998-2007 Zend Technologies
 }}}

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Ticket URL: <http://core.trac.wordpress.org/ticket/25416>
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